Cops who arrested the MTV star and a friend at a Walmart store in Arizona also found her in possession of strong medication that WASN’T hers!

Aubrey Wolters was charged with shoplifting, possession of a prescription drug without a prescription and possession of a dangerous drug. Most shocking — she had her 17-month-old son Austin with her at the time!

Aubrey, 17 was caught stealing cosmetics worth $29.66 from the Walmart store in her native Prescott, AZ according to a police report obtained by Star magazine.

When police also found ritalin and the powerful painkiller OxyContin in her purse, without a prescription, they hauled her off to juvenile detention.

First they called her estranged husband Brandon Akerill to come and pick up poor little Austin, who was his mommy’s unwitting accomplice.

The arrest, which took place in May 2010, isn’t Aubrey’s only brush with the law — she also had her drivers license suspended for failing to pay a speeding ticket?

Do you watch the show, HollyMoms? Are you surprised by Aubrey’s behavior?